as in deceit
the tendency to tell lies
her memoirs have such an air of pervasive mendaciousness that she seems to have lost all sense of what truth is
Synonyms & Similar Words
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Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for mendaciousness
Noun
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The original trial was found to be invalid due to fraud and deceit.—
USA Today,
USA Today,
24 June 2026 -
And with that comes deceit and manipulation.—
Stephanie Nolasco,
FOXNews.com,
18 June 2026
Noun
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Antisocial personality includes a persistent pattern of traits such as callousness, lack of concern, deceitfulness, and irresponsibility, Ryan said.—
Harriet Ramos,
Fort Worth Star-Telegram,
29 Apr. 2026
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Perfidy — from the French perfidie via the Latin perfidia — means deceitfulness, treachery or a breach of faith or promise.—
Harmeet Kaur,
CNN Money,
21 Jan. 2026
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Cite this Entry
“Mendaciousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mendaciousness. Accessed 25 Jun. 2026.
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